This updo is very tall and full of height up front and center with the bangs having had a tease or two (back combing) and plenty of strong hold hairspray.
The way that this front area swoops up and back like a big roll is reminiscent of how women wore their hair in the early 1900's. Her blonde color is light and bright with darker roots and undertones. The back could be brought up into a simple bun or a french braid. The event here is 18th Annual Screen Actors Guild Awards.